Braking distance

Question

(1 point)
Responses

increases as speed decreases.
increases as speed decreases.

decreases as speed increases.
decreases as speed increases.

doubles if speed doubles.
doubles if speed doubles.

increases as speed increases.
increases as speed increases.

Answer 1

The correct response is:

increases as speed increases.

Braking distance increases with speed because the stopping distance is proportional to the square of the speed. This means that if you double your speed, your braking distance increases by a factor of four (not two).